duck under 

to shag / pull an ungly girl who is rated below 5 i.e. ugly

i ducked under last night

duck under by Canary July 4, 2003

Duck Under Go Behind 

A duck under go behind is when your at a party and you disappear. Your long gone before anyone misses you. Sneaking out of the House and easing back in where not to be caught. Its Telling everyone your leaving to go buy beer and you wind up at a different party. Its a duck under go Behind! LOL When you have a work day at the house with beer and that one person shows up and drinks a few beers and leaves the work to everyone else.

She asked me for a ride to the next party and I did a duck under go behind. Her drunk ass wasn't going with me anywhere!

Duck Under Go Behind by EdgeMyLiving May 20, 2018

Duck under the door frame 

Chick with dick

Dude!! That chick the other night!!. She had a duck under the door frame!!!

Duck under the door frame by Adequatesquid09 on Xbox June 24, 2018

under-duck

running under someone as you push them on the swing

I kicked Kerry in the head as he under-ducked me hard.

under-duck by canadian_tan_lines May 3, 2006